A Quantum Sensor for Neutrino Mass Measurements

There are few experiments aiming at determining directly the mass of the electron antineutrino with a sensitivity of 0.2 eV by analyzing the end of the -decay spectrum of specific nuclei. This sensitivity can be only reached if the uncertainties arising from systematic effects are very small and very well determined. The same holds for experiments aiming at improving the sensitivity in the determination of the mass of the electron neutrino using electron-capture ()-decaying nuclei. One important input in these cases is an accurate Q-value of the decay which can be unambiguously determined from the difference of the mass of the mother and the daughter nuclei by means of Penning traps. In order to reach the required sensitivity, a novel device called Quantum Sensor is under construction at the University of Granada (Spain). The device will allow measuring atomic masses, and therefore Q-values from decays with unprecedented accuracy and sensitivity, using fluorescence photons from a laser-cooled ion instead of electronic detection. This paper will give an overview on Q-value measurements performed with Penning traps, relevant for neutrino mass spectrometry, describing the Quantum Sensor and the facility under construction. It will end by presenting the status of the project.The construction of the device described in this paper has been recently started and it is funded by the European Research Council within the ERC-2011-StG call (contract no. 268648-TRAPSENSOR). Besides the applications for neutrino mass spectrometry, the device has been also conceived for applications in the field of nuclear physics. During the conception of the project, D. Rodríguez acknowledges funding from the Spanish Ministry of Science and Innovation (now integrated in the Ministry for Economy and Competitiveness) through the projects FPA2009-14091-C02-02 and FPA2010-14803

Modelación matematica de la cinetica de deshidratación osmotica de la carica papaya

En el trabajo se desarrollaron tres modelos matemáticos que describan las variaciones de pérdida de peso, pérdidas de agua y ganancia de sólidos durante la cinética de deshidratación osmótica de la papaya, en relación con la temperatura, concentración de agente osmótico y tiempo de operación. Para la ejecución del trabajo se realizó un diseño de experimentos factorial a fin de obtener los modelos matemáticos. En cada prueba experimental, las frutas fueron peladas, cortadas e introducidas en una solución de sacarosa. Se determinó la variación de peso, humedad y sólidos totales a través del tiempo a temperatura constante. Además, se realizo una evaluación sensorial en pruebas seleccionadas

CVD and oxidative stress

Nowadays, it is known that oxidative stress plays at least two roles within the cell, the generation of cellular damage and the involvement in several signaling pathways in its balanced normal state. So far, a substantial amount of time and effort has been expended in the search for a clear link between cardiovascular disease (CVD) and the effects of oxidative stress. Here, we present an overview of the different sources and types of reactive oxygen species in CVD, highlight the relationship between CVD and oxidative stress and discuss the most prominent molecules that play an important role in CVD pathophysiology. Details are given regarding common pharmacological treatments used for cardiovascular distress and how some of them are acting upon ROS-related pathways and molecules. Novel therapies, recently proposed ROS biomarkers, as well as future challenges in the field are addressed. It is apparent that the search for a better understanding of how ROS are contributing to the pathophysiology of CVD is far from over, and new approaches and more suitable biomarkers are needed for the latter to be accomplished

María Zambrano frente al vacío

El presente artículo busca poner en diálogo dos posturas que en principio resultan opuestas. La nada, presentada desde María Zambrano, se encuentra cara a cara con una idea nacida en el pensamiento budista y refinada por el filósofo Nāgārjuna, la idea de la vacuidad. La relación surge en la negatividad de los conceptos y el lado positivo como categorías de la realidad. Para entender la nada de Zambrano recorremos El Hombre y lo Divino y Claros del bosque, libros donde vemos la inspiración mística y religiosa de la filósofa

Odontogenic calcificant cystic tumor : a report of two clinical cases

Odontogenic Calcificant Cystic Tumor (OCCT) is an infrequent injury. It arises from odontogenic epithelial rests present in the maxilla, jaw or gum. Gorlin and col. described the OCCT for first time as an own pathological entity in 1962. Clinically, the OCCT represents 1% of the odontogenic injuries. It is possible to be found from the first decade to the eighth decade. It affects in same proportion the maxilla and the jaw, being the most common in the dented zones, with greater incidence in the first molar area. Two case reports of OCCT in two different ages, both in female individuals, one at 5 years old and the other at 35 years old are presented. Enucleation of the tumor was the treatment chosen. The purpose of this article is to present a review of the literature related to these two cases of OCCT and its treatment, putting an emphasis on its aetiology, biological behaviour and treatment

Balanced Scorecard and Efficiency: Desing and Empirical Validation of strategic Map in the University by Means of DEA

The principal objective of the research reported in this article is to validate a Balanced Scorecard (BSC) model and a Strategic Map for the University by studying the relationships of efficiency between its dimensions. Subsequently, the validation is completed by establishing hypotheses of efficiency relationships between the perspectives proposed, em- ploying Data Envelopment Analysis (DEA). Empirical evidence has been obtained on the validity of the proposed BSC for a unit of academic management in the university. The first contribution of this work is the establishment of a framework of analysis of the hypothetical cause-effect relationships in the BSC in university institutions. The second contribution is to obtain the determining factors of the performance in this type of institution and, therefore, the Strate- gic Map. Specifically, these factors are: the participation of teaching staff in innovation activities; the number of doc- torate-level staff; the academic subjects and credits in the Virtual Campus; and the scores in the surveys of student sat- isfaction. With respect to research, the determining factors of the performance are: the research sexennials; the funding obtained from contracts with companies; the number of research projects obtained; their financing; and the participation of teachers in these projects

Utilización de la metodología seis sigma para reducir el tiempo de respuesta vía telefónica, en la resolución de problemas sobre el manejo del sistema informático para clientes de una compañía de desarrollo de software en la ciudad de Guayaquil

The present work aims to develop, implement and maintain the enterprise base of the project, the principles of a Quality System. To achieve this goal has been to implement the philosophy of Six Sigma DMAIC methodology used strategically by its acronym in English, means: Define, Measure, Analyze, Improve and Control. The main activity of the company is developing software technology for web-focused management. The study is critical of the support given to users on issues related to the use of software. With a view to improvement in this process, the company decided to initiate a Quality System to search for "Reduce response time by phone, in solving problems on the management system for customers." The improvement is observable in a quantitative way in reducing the percentage of calls that exceed the call time of four minutes. It performs an initial assessment of the process, choosing the best solution, implementing the strategy and to verify their effectiveness through controls leading to improvement

¿Por qué los países que innovan menos crecen menos? relación entre i + d + i y crecimiento económico en el caso latinoamericano (1993 - 2013)

El presente trabajo de investigación tiene como principal objetivo evaluar la contribución de las variables relacionadas al proceso de avance tecnológico e investigativo con relación al crecimiento económico. En concreto, en este trabajo se evalúa a los distintos países que pertenecen a la región de América Latina con la finalidad de contrastar si es que el desarrollo de las economías de nuestro continente se limita a crecer solo por consecuencia de su capacidad de generación de capital y mano de obra